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PSTREE(1)			 User Commands			     PSTREE(1)

NAME
       pstree -	display	a tree of processes

SYNOPSIS
       pstree [-a, --arguments]	[-c, --compact]	[-h, --high-
       light-all, -Hpid, --highlight-pid pid] [-g] --show-pgids] [-l, --long]
       [-n, --numeric-sort] [-N, --ns-sortns [-p, --show-pids]
       [-s, --show-parents] [-S, --ns-changes] [-u, --uid-changes] [-Z,	--se-
       curity-context] [-A, --ascii, -G, --vt100, -U, --unicode] [pid, user]
       pstree -V, --version

DESCRIPTION
       pstree shows running processes as a tree.  The tree is rooted at	either
       pid or init if pid is omitted.	If  a  user  name  is  specified,  all
       process trees rooted at processes owned by that user are	shown.

       pstree  visually	 merges	 identical  branches by	putting	them in	square
       brackets	and prefixing them with	the repetition count, e.g.

	   init-+-getty
		|-getty
		|-getty
		`-getty

       becomes

	   init---4*[getty]

       Child threads of	a process are found under the parent process  and  are
       shown with the process name in curly braces, e.g.

	   icecast2---13*[{icecast2}]

       If  pstree  is called as	pstree.x11 then	it will	prompt the user	at the
       end of the line to press	return and will	not return until that has hap-
       pened.  This is useful for when pstree is run in	a xterminal.

       Certain	kernel	or  mount  parameters,	such as	the hidepid option for
       procfs, will hide information for some processes. In  these  situations
       pstree will attempt to build the	tree without this information, showing
       process names as	question marks.

OPTIONS
       -a     Show command line	arguments.  If the command line	of  a  process
	      is  swapped  out,	 that process is shown in parentheses.	-a im-
	      plicitly disables	compaction for processes but not threads.

       -A     Use ASCII	characters to draw the tree.

       -c     Disable compaction of identical subtrees.	 By default,  subtrees
	      are compacted whenever possible.

       -G     Use VT100	line drawing characters.

       -h     Highlight	 the current process and its ancestors.	 This is a no-
	      op if the	terminal doesn't support highlighting  or  if  neither
	      the  current process nor any of its ancestors are	in the subtree
	      being shown.

       -H     Like -h, but highlight the specified  process  instead.	Unlike
	      with  -h,	 pstree	 fails	when  using  -H	if highlighting	is not
	      available.

       -g     Show PGIDs.  Process Group IDs are shown as decimal  numbers  in
	      parentheses  after  each	process	 name.	-g implicitly disables
	      compaction.  If both PIDs	and PGIDs are displayed	then PIDs  are
	      shown first.

       -l     Display  long  lines.  By	default, lines are truncated to	either
	      the COLUMNS environment variable or the display width.  If  nei-
	      ther of these methods work, the default of 132 columns is	used.

       -n     Sort processes with the same ancestor by PID instead of by name.
	      (Numeric sort.)

       -N     Show individual trees for	each namespace of the type  specified.
	      The available types are: ipc, mnt, net, pid, user, uts.  Regular
	      users don't have access to other users'  processes  information,
	      so the output will be limited.

       -p     Show PIDs.  PIDs are shown as decimal numbers in parentheses af-
	      ter each process name.  -p implicitly disables compaction.

       -s     Show parent processes of the specified process.

       -S     Show namespaces transitions.  Like -N,  the  output  is  limited
	      when running as a	regular	user.

       -u     Show  uid	 transitions.	Whenever  the uid of a process differs
	      from the uid of its parent, the new uid is shown in  parentheses
	      after the	process	name.

       -U     Use UTF-8	(Unicode) line drawing characters.  Under Linux	1.1-54
	      and above, UTF-8 mode is entered on the  console	with  echo  -e
	      '	33%8' and left with echo -e ' 33%@'

       -V     Display version information.

       -Z     (SELinux)	 Show  security	 context  for each process.  This flag
	      will only	work if	pstree is compilied with SELinux support.

FILES
       /proc  location of the proc file	system

BUGS
       Some character sets may be incompatible with the	VT100 characters.

SEE ALSO
       ps(1), top(1).

psmisc				  2014-01-31			     PSTREE(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | FILES | BUGS | SEE ALSO

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